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|
-----------------------------------------------------------------------------
-- |
-- Module : XMonadContrib.Tabbed
-- Copyright : (c) David Roundy
-- License : BSD-style (see xmonad/LICENSE)
--
-- Maintainer : email@address.com
-- Stability : unstable
-- Portability : unportable
--
-- A tabbed layout for the Xmonad Window Manager
--
-----------------------------------------------------------------------------
module XMonadContrib.Tabbed (
-- * Usage:
-- $usage
tabbed
, Shrinker, shrinkText
) where
import Control.Monad ( forM, liftM )
import Control.Monad.State ( gets )
import Graphics.X11.Xlib
import XMonad
import XMonadContrib.Decoration
import Operations ( focus, initColor )
import qualified StackSet as W
import XMonadContrib.NamedWindows
-- $usage
-- You can use this module with the following in your configuration file:
--
-- > import XMonadContrib.Tabbed
--
-- > defaultLayouts :: [Layout]
-- > defaultLayouts = [ tabbed shrinkText
-- > , ... ]
tabbed :: Shrinker -> Layout Window
tabbed shrinkT = Layout { doLayout = dolay shrinkT, modifyLayout = const (return Nothing) }
dolay :: Shrinker -> Rectangle -> W.Stack Window -> X [(Window, Rectangle)]
dolay _ sc (W.Stack w [] []) = return [(w,sc)]
dolay shr sc@(Rectangle x y wid _) s@(W.Stack w _ _) = withDisplay $ \dpy ->
do activecolor <- io $ initColor dpy "#BBBBBB"
inactivecolor <- io $ initColor dpy "#888888"
textcolor <- io $ initColor dpy "#000000"
bgcolor <- io $ initColor dpy "#000000"
let ws = W.integrate s
ts = gentabs x y wid (length ws)
tws = zip ts ws
maketab (t,ow) = newDecoration ow t 1 bgcolor activecolor (drawtab t ow) (focus ow)
drawtab r@(Rectangle _ _ wt ht) ow d w' gc =
do nw <- getName ow
tabcolor <- (maybe inactivecolor (\focusw -> if focusw == ow then activecolor else inactivecolor) . W.peek) `liftM` gets windowset
io $ setForeground d gc tabcolor
io $ fillRectangles d w' gc [Rectangle 0 0 wt ht]
io $ setForeground d gc textcolor
centerText d w' gc r (show nw)
centerText d w' gc (Rectangle _ _ wt ht) name =
do fontst <- io $ loadQueryFont d "-misc-fixed-*-*-*-*-*-*-*-*-*-*-*-*"
io $ setFont d gc (fontFromFontStruct fontst)
let (_,asc,_,_) = textExtents fontst name
name' = shrinkWhile shr (\n -> textWidth fontst n >
fromIntegral wt - fromIntegral (ht `div` 2)) name
width = textWidth fontst name'
io $ drawString d w' gc
(fromIntegral (wt `div` 2) - fromIntegral (width `div` 2))
(fromIntegral ht - fromIntegral (asc `div` 2)) name'
forM tws maketab
return [ (w,shrink sc) ]
type Shrinker = String -> [String]
shrinkWhile :: Shrinker -> (String -> Bool) -> String -> String
shrinkWhile sh p x = sw $ sh x
where sw [n] = n
sw [] = ""
sw (n:ns) | p n = sw ns
| otherwise = n
shrinkText :: Shrinker
shrinkText "" = [""]
shrinkText cs = cs : shrinkText (init cs)
shrink :: Rectangle -> Rectangle
shrink (Rectangle x y w h) = Rectangle x (y+tabsize) w (h-tabsize)
gentabs :: Position -> Position -> Dimension -> Int -> [Rectangle]
gentabs _ _ _ 0 = []
gentabs x y w num = Rectangle x y (wid - 2) (tabsize - 2)
: gentabs (x + fromIntegral wid) y (w - wid) (num - 1)
where wid = w `div` (fromIntegral num)
tabsize :: Integral a => a
tabsize = 20
|
